Hi,
A popular vote, now it's time to make some arrangements.
Meet to be updated
Outside Archway Tube station (Northern line from London Bridge).

10:30 to 11:00am, a bit later allowing for Sunday train services.
There are a few Tea/Coffee shops around the meeting point.
It's then a 15 minute walk to the Cemetery, I've outlined the grounds in Yellow.
TicketsYou can book online but I suspect a Sunday in October/November, will not be too busy. The price is £10.
https://highgatecemetery.org/PhotographyIs allowed as is the use of a Tripod if not on a tour.
RefreshmentsTBC, there are options in Highgate High street, about 0.5 miles north. Open to suggestions.